public class NumberTriangleRecursive {
public static void main(String[] args) {
int n = 5;
printNumbersRecursive(n, 1);
printNumbersIterative(n);
}
private static void printNumbersRecursive(int n, int level) {
if (level > n) {
return;
}
for (int i = 0; i < level; i++) {
System.out.print((level) + " ");
}
System.out.println();
printNumbersRecursive(n, level + 1);
}
private static void printNumbersIterative(int n) {
for (int i = 1; i <= n; i++) {
for (int j = 0; j < i; j++) {
System.out.print((i) + " ");
}
System.out.println();
}
}
}